Open AccessSolar energy efficient - AOP process for treatment of cyanide in mining effluents
Author(s) -
B. A. Tsybikova
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/962/4/042079
Subject(s) - oxidizing agent , cyanide , chemistry , radical , sunlight , pollutant , photochemistry , effluent , degradation (telecommunications) , environmental chemistry , inorganic chemistry , environmental engineering , environmental science , organic chemistry , telecommunications , physics , astronomy , computer science
Photochemical process using of UV component of natural sunlight (hybrid Solar method) in the presence of an oxidizing agent – persulfates was studied for destruction of cyanides in mining effluents. The kinetic regularities was studied for process of photooxidation of cyanides. Comparative destruction of cyanides experiments have shown that the efficiency of the destruction process in the selected oxidative systems changed in the following order: {Solar + PS} > {Solar} > {UV + PS} > {UV} . High treatment efficiency of cyanides using a hybrid system {Solar + PS} is due to high intensity of the UV-C component of the sunlight and the rate of generation of hydroxyl radicals OH and sulfate anion radicals SO 4 -· , respectively. The results obtained indicate the high efficiency of the hybrid Solar-induced method for purification of cyanide-containing pollutants, which allows achieving complete destruction of toxic cyanides to non-toxic products.